Removable-nut construction for roll-adjusting devices and the like.



P. V. TIPPET. REMOVABLE NUT CONSTRUCTION FOR ROLL ADJUSTING DEVICES AND THE LIKE.

2 sums-211111121 1.

Patented Apr. 13, 1915.

APPLICATION FILED MAY13. I914.

WITNESSES P. V. TIPPET. REMOVABLE NUT- CONSTRUCTION FOR ROLL ADJUSTING DEVICES AND THE LIKE.

APPLICATION FILED MAY 13, 1914.

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PHILIP VIVIAN TIPPET, 0F ANSONIA, CONNECTICUT, ASSIGN'OR T0 FARREL FOUNDRY & MACHINE 00., OF ANSONIA, CONNECTICUT, A CORPORATION OF CONNECTICUT.

REMOVABLE-NUT CONSTRUCTION FOR ROLL-ADJUSTING. DEVICES AND THE LIKE.

Application filed May 13, 1914.

To all whom it may concern Be it known that I, PHILIP VIVIAN TIrrn'r, a subject of the King of England, residing at Ansonia, in the county of New Haven and State of Connecticut, have invented certain new and useful Improvements in Removable- Nut Construction for Roll-Adjusting Devices and the like, of which the following is a full, clear, and exact description.

This invention relates to a removable nut construction for roll adjusting devices and the like, such as employed in rubber grinders, or other mills, and it has particular reference to a construction in which the rolls are in horizontal alinement, and wherein one of the rolls has end bearing blocks slidably mounted in the frame and adjustable by suitable adjusting screws.

The primary object of the invention is to provide a construction wherein the nut or bushing, together with the adjusting screw, may be easily placed in its assembled position in the frame, and may be removed from the frame with equal facility.

Another object of the invention is the provision of a construction in which the nut or bushing, with the screw therein, may always be taken out of the socket in the frame without the necessity of moving the nut toward the roll with which it cooperates. This is a very important feature, because very often the parts become jammed in a position where inward movement of the nut is absolutely impossible, without either sawing off the inner end portion of the screw, or disturbing the roll bearings. Moreover, even after the screw is sawed off, the removal of the nut from the frame is sometimes a matter of ditiiculty, where it is dependent on an endwise movement of the nut toward the roll, for the heavy load imposed on the nut in the opposite direction, during the operation of the rolls, frequently causes the nut to be tightly jammed in the frame. In my improved construction, however, the nut may be readily moved. out of its socket, away from the roll, after it has been turned angularly to a slight extent, without any movement whatever in a direction counter to the load.

The present invention also purposes the provision of simple, efiicient means for lock- Specification of Letters Patent.-

Iatented Apr. I3, I915.

Serial in). 838,383.

ing the nut against both angular and axial displacement, under normal conditions, and the general improvement of devices of the class to which the invention relates.

To these and other ends, the invention consists in the novel features and combinations of parts to be hereinafter described and claimed.

In the accompanying drawings, Figure l is a fragmentary side elevation of an end frame of a rubber grinder equipped with my improvements, the movable bearing block being shown partially in section, Fig. 2 is a front elevation of Fig. 1, Fig. 3 is an enlarged section on line 3 3 of Fig. 2, Fig. 4i is an enlarged section on line 4elof Fig. 2, with the adjusting screw omitted, Fig. 5 is a section on line 5-5 of Fig. 3, Fig. 6 is a section on line 6-6 of Fig. 1, Fig. 7 is a fragmentary section of the frame taken through the socket for the nut, Fig. 8 is a front elevation of Fig. 7, Fig. 9 is a rear elevation of Fig. 7, Fig. 10 is an enlarged rear elevation of the nut, detached, Fig. 11 is a detail of the bearing ring, and Fig. 12 is a detail of one of the washers.

Referring to the drawings, I have shown my improvements as applied to a rubber grinder, or similar device, whereof 20 indicates one of the end frames, 21 the cooperating cap plate, and 22 a horizontally slidable bearing block guided between the main portion of the frame and the cap plate. I have not considered it necessary to illustrate the movable roll adapted to be carried by the bearing block 22, nor the fixed roll with which themovable roll 00- operates, as these features are well understood in the art. The adjusting screw 23 for the bearing block is removably mounted in an upright portion of the frame, and it engages a removable nut or bushing 24: secured in a socket 25 extending through said upright portion of the frame. The nut 2% is secured in the socket or bore 25 by suitable lugs, as hereinafter described, and by bolts 26 cooperating with a bearing ring 27 at the front of the upright frame portion, and with looking devices 28 located at the rear of said frame portion. The adjusting screw 28 is provided with suitable screw threads 29 to engage corresponding threads V a which createbetween them the recesses 32.

The nut 24 is in the form of a sleeve having on its cylindrical surface laterally projecting lugs 33 corresponding generally in shape with the frame lugs 31. The nut may be inserted into thesocket 25 from the front with the lugs. 33 in engagement with the correspondingly shaped openings or recesses 32, and after the lugs 33 have passed beyond the plane of the rear facesof the lugs 31, it is turned to bring the lugs 33 back of the lugs 31, in which position the nut is locked against outward movement in an obvious manner. To remove the nut the operation is reversechthe nut being turned to bring the 'lugs 33 again into register with the recesses 32, after which it may be moved forwardly out of the frame. The rear faces of theframe lugs 31 are substantially perpendicular to the axis of the socket, as shown at 34, and said faces are flat to provide substantial bearing surfaces for the flat front surfaces 35 of the nut lugs 33, as shown at Fig. 4. 1

At the open rear portion of the socket 25,

' the latter is provided with walls 36 extending inwardly to conform to the rear end portion of the nut 24. At its rear extremity, the sleeve-like nut is provided with notches 37 which present segmental bearing surfaces adapted to seat the previously mentioned locking devices 28, which preferably take the form of square washers. Each washer 28 is seated at one side in one of the seats 37 of the nut, and at the opposite side it is seated in a notch 38 in the frame. The notches 38 present surfaces perpendicular to the axis of the socket adapted to aline with the corresponding surfaces of the nut in such a manner as to accommodate the washers in the manner shown in Fig. 3. The

notches 38 are formed by cutting away the frame at the periphery of the socket 25, as shown in Fig. 9. There is sufficient distance between the nut and the socket Wall in the spaces'intermediate the nut lugs 33 to accommodate, with a suitable amount of clearance, the shanks of the bolts 26. The rear end of eachbolt 26 is threaded, as shown at Fig. 3, and provided with a nut 39 bearing on the rear face of the corresponding washer 28. The front end of each bolt is provided with a head 26 bearing on the ring 27,- which ring in turn bears upon thefront face of the frame.

The ring 27 isprovided at its inner periphery with radial notches 40 (Fig. 11), which accommodate the shanks of the bolts 26, and the heads 26 of these bolts bear on the frame along the margins of the notches, as shown by the dotted lines in Fig. 11. By tightening upthe screws 39, the nut or bushing 24 is moved outward in the socket 25 by the engagement of the washers 28 in the notches 37 of the nut until the bearing surfaces 34, 35 of the frame and nut are in tight contact, as shown in Fig. 4. This locks the nut'24 firmly against endwise displacement because the interengaging lugs of the frame and nut absolutely prevent movement of the latter in one direction, 2'. e., away from the roll, while movement of the nut toward the roll is prevented by the thrust of the bolts 26 onthe front face of the frame through the ring 27. Moreover, the washers 28 not only assist in locking the nut or bushing against inward movement, but they also prevent any appreciable angular or turning movement of the nut owing to the fact that the flat surfaces of the notches 37 which extend lengthwise of the nut are in approximate contact with the fiat surfaces of the washers which are securely locked against turning movement by engagement in the frame notches 38.

The operation of the device is substantially as follows: After the nut 24 has been placed in its socket in the manner previously described with the adjusting screw 23 in position therein, the ring 27 is placed around the screw to bear on the front face of the frame, the bolts 26 are passed through the notches 40 in the ring, the washers 28 are placed freely over the ends of the bolts by means of the washer openings 28, and the nuts 39 are screwed on the inner ends of the bolts. The screwing up of the nuts 39 on the respective bolts tightly engages the bearing surfaces 35 of the nut or bushing 24 with the corresponding bearing surfaces 34 of the frame and locks the washers 28 tightly in the cooperating seats or notches 37, 38. .[f it is desired to remove the screw and nut from the frame, as where the screw becomes jammed in the nut by distortion of the threads, it is simply necessary to remove the bolt nuts 39, take out the bolts 26, remove the washers 28 and bearing ring 27, turn the nut or bushing 24 into position to bring the lugs 33 into register with the recesses 32, and then pull the nut and screw forwardly out of the socket. It is important to note that in this operation of removing the nut, itis not necessary to shift it toward the roll to any extent whatever. This is a valuable feature because frequently the parts become jammed in such a position that the nut cannot be shifted toward the roll Without sawing off the adjusting screw, or removing the roll bearings, either of which is a tedious, time-consuming operation. With my construction it is simply necessary to remove the nut locking devices so as to release the nut for angular or turning movement, and then to turn it through a short distance, after which it can be freely re moved by endwise displacement away from the roll. Thus repairs are very much facilitated. Another advantage of my construction resides in the fact that the washers 28, or their equivalents, not only lock the bushing or nut very firmly against angular dis placement, but also assist in preventing endwise displacement of the same. The bushing or nut is always rigidly supported in a certain definite position during the operation of the rolls so that a nice adjustment of the movable roll by the adjusting screw may be readily obtained.

Of course, I do not limitmyself to a construction in which the frame and screw bushing have any certain number of cooperating lugs, nor do I limit myself to a roll adjusting device having any particular number of locking devices for the bushing. Moreover, the threads for the adjusting screw need not be formed directly in the nut or bushing engaged by the locking members 28, or their equivalents. Furthermore, it

will be apparent that the improved removable nut construction may be used to advantage in devices other than roll adjusting devices. Various changes in these and other details of the construction may be adopted without departing from the scope of my invention as defined in the claims.

What I claim is 1. In a removable nut construction for roll adjusting devices and the like, the combination of a frame having a socket, a nut in said socket, a roll adjusting screw having a threaded engagement with said nut and projecting beyond the rear surface thereof to engage a roll support, and means to engage the nut and frame for locking the nut in place in the frame, said means being releasable whereby to permit the nut and screw to be removed by an endwise movement toward the front of the frame, substantially as described.

2. In a removable nut construction for roll adjusting devices and the like, the combination. of a frame having a socket open at the front of the frame, a nut in said socket, a roll adjusting screw carried by said nut, and releasable means for locking said nut against endwise displacement in said socket,

said means being constructed and arranged whereby the nut may be removed from its socket by an endwise movement toward the front of the frame, and Without disturbing the adjusted position of the screw in the nut, su st ntially as described.

3. In a removable nut construction for roll adjusting devices and the like, the combination of a frame having a socket, a nut in said socket, a roll adjusting screw having a threaded engagement with said nut and projecting beyond the rear surface thereof to engage a roll support, releasable means for holding the nut in place, said means being constructed and arranged to permit the nut and screw to be removed by an endwise movement toward the front of the frame while said roll support acts as an abutment for the connected screw and nut to prevent endwise movement thereof in an opposite direction.

4. In a removable nut construction for roll adjusting devices, and the like, the combination of a frame having a socket, a nut to fit within said socket adapted to carry a roll adjusting screw, and locking means associated with the nut for preventing turning movement thereof, and endwise movement toward the roll; substantially as described.

In a removable nut construction, the combination of a frame having a socket or opening extending therethrough, said socket or opening having inwardly projecting lugs at the front portion thereof, a nut insertible into said socket and having laterally pro jecting lugs named lugs, the lugs of the frame and nut respectively having cooperating bearing su1= faces, and clamping means acting on the nut to hold said bearing surfaces in tight contact with each other; substantially as described.

6. In a removable nut construction, the combination of a frame having a socket or opening therethrough, said frame being pro vided with lugs projecting inwardly from said opening at the front of the frame, and said lugs having flat rear faces forming bearings perpendicular to the axis of the socket, a nut insertible into said socket and having laterally projecting lugs with fiat front faces to bear on the flat rear faces of the frame lugs, means for holding the lugs of the nut in contact with those of the frame, and means for preventing turning movement of the nut in the socket; substantially as described.

7. In aremovable nut construction, the combination of a frame, having a nut opening or socket provided with inwardly projecting lugs, a nut or bushing having laterally projecting lugs to cooperate with said first-named lugs and a clamping device for holding the nutlugs in contact with the frame-lugs, including a bolt extending through the frame; substantially as described.

8. In a removable nut construction, the combination of a frame, having a nut open ing or socket extending therethrough, and

to interlock with said first .iinward ly projecting lugs, a nut insertible provided" with inwardly projecting lugs, a nut having laterally projecting lugs to cooperate with said first-named'lugs, and a clamping device for holding the nut-lugs in contact with the frame-lugs, includinga removable bolt extending lengthwise through said socket between the lugs of the nut; substantially as described.

9. In a removable nut construction, the combination of a frame having a socket with into said socket. and having lugs to cooperate with the frame-lugs, andv a single clamping device for holding the lugs of the nut in contact with the frame-lugs and for preventing urn'ing of the nut in the socket; substantially as described.

10. Ina removable nut construction such as described, the combination of a frame means for the nut, including a locking device engaging the nut to exert a longitudinal thrust on the latter and engaging the frame to prevent turning movement of the nut; substantially as described. I

12. In a removable nut construction such as described, the combination of a frame having a socket or opening, a nut insertible into said opening, and securing means for the nut, including a locking device engaging the rear portion ofthe nut to exert a longitudinal thrust on the latter and likewise engaging: .a a notch in the frame to prevent Y turning movement of the nut; substantially as described. 7 13. In a removable nut construction such as described, the combination of a frame having a socket extending completely therethrough, 'said frame being provided with lugs projecting inwardly into said socket, a nut insertible into said socket from the front end thereof and having'lugs which cooperate with said first-named lugs, and securingmeans for the nut including a locking member engaging a notch in the rear end portion of the nut and likewise engaging a notch in the frame at the edge of the socket, and means to hold said locking member in place; substantially as described.

' 14:. In aremovable nut construction such 'as-described, the combination with a frame having an'opening or socket, a nut insertible into said socket, and securing means for said nut, including a ring bearing on the front face of said frame around the nut, and inwardly extending bolts bearing on said ring; substantially as described.

15. In a removable nut construction such as described, the, combination of a frame having an opening extending therethrough, said frame having lugs projecting into said opening, a nut insertible into said opening and having lugs to cooperate with the frame-lugs, a member bearing on the front face of the frame around said nut, bolts having heads bearing on said member and provided with shanks extending lengthwise throughthe socket in the spaces between the nut-lugs, and members carried by the rear ends of said bolts, each having a bearing on the nut and a bearing on the frame; substantially as described.

16. In a removable nut construction such as described, the combination of a frame having an opening or socket, a nut insertible into said opening or socket, an adjusting screw carried by the nut, a plurality of look ing members engaging bearing surfaces at one end of the nut and cooperating notches in the adjacent part of the frame, and means for holding said locking members in place; substantially as described.

17. In a removable nut construction such as described, the combination of a frame having an opening or socket with radial notches, a nut having bearing surfaces, approximately perpendicular to the axis thereof, and locking members engaging said bearing surfaces and said notches; substantially as described.

18. In a removable nut construction-such as described, the combination of a frame having an opening or socket, and notches cut in the frame adjacent the edge of the socket, a nut to fit said socket, and clamping means for the nut, including a plurality of members bearing on said nut and engaging the respective notches; substantially as described.-

19. In a removable nut construction for roll adjusting devices and the like, the combination of a frame having a socket opening at the front of the frame, a nut in said socket, a roll adjusting screw threaded to said nut and projecting beyond the rear thereof to engage a roll support, said nut being releasable by a turning movement of the nut whilesuch screw is in operative contact with the roll support and a subsequent endwise movement toward the front of the block, and independent locking means for maintaining said nut against rotary and endwise movement.

20. In a removable nut construction for roll adjusting devices and the like, the combination of a frame having a socket, a screw threaded to the nut and projecting beyond In witness whereof, I have hereunto set the rear surface thereof to engage a roll supmy hand on the 11th day of May, 1914. port, and means for permitting the removal of the nut and screw by an endwise move- PHILIP VIVIAN TIPPET' ment toward the front of the frame only, Witnesses:

said means including detachable locking CARL F. SCHNUCK,

means interposed between the nut and frame. 13. O. HALE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, 1). C. 

